Tap water in Joint Base Lewis-Mcchord, WA — ZIP 98433
2 public water systems serving about 42,704 people. PFAS "forever chemicals" have been detected here.
C
Fair
PFAS detected: at least one system serving this ZIP reported PFAS in EPA UCMR 5
testing. Levels and the 2024 federal limits are shown per system below.
Water systems serving 98433
Jblm Lewis
PWSID WA5326050 · serves 35,414 ·
groundwater
0 health-based / 0 total violations (5 yrs)
· PFAS up to 11.1 ppt — above federal limit
Jblm Mcchord Field
PWSID WA5352200 · serves 7,290 ·
groundwater
0 health-based / 0 total violations (5 yrs)
· PFAS up to 8 ppt — above federal limit
Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology